13312223 has 4 divisors (see below), whose sum is σ = 13320360. Its totient is φ = 13304088.

The previous prime is 13312199. The next prime is 13312231. The reversal of 13312223 is 32221331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32221331 = 3607 ⋅8933.

It is a cyclic number.

It is not a de Polignac number, because 13312223 - 2¹⁶ = 13246687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (3330090).

Almost surely, 2^13312223 is an apocalyptic number.

13312223 is a deficient number, since it is larger than the sum of its proper divisors (8137).

13312223 is an equidigital number, since it uses as much as digits as its factorization.

13312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8136.

The product of its digits is 216, while the sum is 17.

The square root of 13312223 is about 3648.5919201796. The cubic root of 13312223 is about 237.0010088559.

Adding to 13312223 its reverse (32221331), we get a palindrome (45533554).

The spelling of 13312223 in words is "thirteen million, three hundred twelve thousand, two hundred twenty-three".